Six years ago, Channel 4 started broadcasting the work of Professor Noel Fitzpatrick, who uses hi-tech solutions to save animals' lives. This documentary looks back at some of his most memorable cases and catches up with the animals at the heart of the stories. Up first are puppies, including four-month-old West Highland terrier Rodney, who had been born without back feet, bulldog puppy Chica, who required urgent surgery to repair a serious elbow fracture, and Rottweiler puppy Elvis, who was given a unique spinal implant developed by Noel.